CVE-2025-46712
In versions prior to OTP-27.3.4 (for OTP-27), OTP-26.2.5.12 (for OTP-26), and OTP-25.3.2.21 (for OTP-25), Erlang/OTP SSH fails to enforce strict KEX handshake hardening measures by allowing optional messages to be exchanged.
Does this matter?
Lower severity and a low EPSS score (0.53%). Track it; it rarely justifies an emergency change on its own.
Description
Erlang/OTP is a set of libraries for the Erlang programming language. In versions prior to OTP-27.3.4 (for OTP-27), OTP-26.2.5.12 (for OTP-26), and OTP-25.3.2.21 (for OTP-25), Erlang/OTP SSH fails to enforce strict KEX handshake hardening measures by allowing optional messages to be exchanged. This allows a Man-in-the-Middle attacker to inject these messages in a connection during the handshake. This issue has been patched in versions OTP-27.3.4 (for OTP-27), OTP-26.2.5.12 (for OTP-26), and OTP-25.3.2.21 (for OTP-25).
- CVSS 3.1
- 3.7 LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
- EPSS
- 0.53% probability · 43th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-440
- Source
- security-advisories@github.com
References
- https://github.com/erlang/otp/commit/e4b56a9f4a511aa9990dd86c16c61439c828df83
- https://github.com/erlang/otp/releases/tag/OTP-25.3.2.21
- https://github.com/erlang/otp/releases/tag/OTP-26.2.5.12
- https://github.com/erlang/otp/releases/tag/OTP-27.3.4
- https://github.com/erlang/otp/security/advisories/GHSA-934x-xq38-hhqf
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.